Essential oils of the ginger plants Meistera caudata and Conamomum vietnamense : chemical compositions, antimicrobial, and mosquito larvicidal activities.
Zeitschrift fur Naturforschung. C, Journal of biosciences(2023)
摘要
The current study describes the chemical identification, antimicrobial, and mosquito larvicidal activities of essential oils from and , growing in Vietnam. Essential oils were extracted from the leaves and rhizomes, and characterized by the GC-FID/MS (gas chromatography-flame ionization detection/mass spectrometry) analysis. Monoterpenes (33.1-89.2 %) were the main chemical class found in these oils. -Pinene (30.8 %) and -pinene (23.8 %) were two major compounds in leaf oil. leaf and rhizome essential oils were dominated by 1,8-cineole (47.9-62.0 %) and limonene (10.3-16.2 %). With the same MIC (minimum inhibitory concentration) value of 25 μg/mL, leaf and rhizome essential oils strongly inhibited the growth of Gram-positive bacteria ATCC 29213 and ATCC 6501, respectively. For 24 and 48-h treatments, leaf essential oil strongly controlled the growth of mosquito with the respective LC values of 7.67 and 6.73 μg/mL, and the respective LC values of 13.37 and 10.83 μg/mL. In the same manner, rhizome essential oil also showed strong mosquito larvicidal activity against with the LC values of 12.37 and 12.00 μg/mL, and the LC values of 20.56 and 18.58 μg/mL, respectively. essential essential oils containing a high amount of 1,8-cineole are generally better than essential essential oils in both two biological assays.
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关键词
essential oils,ginger plants,chemical compositions
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